$ git clone -n https://src.fedoraproject.org/rpms/qtwaifu2x.git /var/lib/mock/f45-build-34184-680/root/chroot_tmpdir/scmroot/qtwaifu2x
Cloning into '/var/lib/mock/f45-build-34184-680/root/chroot_tmpdir/scmroot/qtwaifu2x'...
$ git fetch origin 8a613f7f1eeca0a133fc38f0161601307c91af43:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qtwaifu2x
 * [new ref]         8a613f7f1eeca0a133fc38f0161601307c91af43 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8a613f7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild